NOVEL HETEROCYCLIC COMPOUND

摘要

Disclosed is a drug having a high affinity for benzodiazepine .omega.3 receptors which contains, for example, a compound represented by the formula (1) below as an active constituent and has curative and preventive effects o n anxiety and depression. (1) [In the formula, R1 and R2 independently represe nt a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group or the like; R3 and R4 independently represent a hydrogen atom, an optionally substituted alkyl group or the like; R5, R6, R7 and R8 independently represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted aryl group or the like; and X represents an oxygen atom, a sulfur atom, NR10 or the like (wherein R10 represents a hydrogen atom, an optionally substituted alkyl group or the like).]